math/xspread: include errno.h for errno

errno must be accessed by a macro from errno.h.

MANPREFIX: eleminate its usage  and move man to share/man

math/xspread: drop unused libpthread-stubs

libpthread-stubs no longer provides shared library since 9cba0ef67a30:

$ make clean all WITH=X11
[...]
===>   xspread-3.1.1c_4 depends on shared library: libpthread-stubs.so - not
found

math: remove 'Created by' lines

A big Thank You to the original contributors of these ports:

  *  Aaron Dalton <aaron@FreeBSD.org>
  *  Aaron Dalton <aaron@daltons.ca>
  *  Alessando Sagratini <ale_sagra@hotmail.com>
  *  Alex Dupre <ale@FreeBSD.org>
  *  Alexey Dokuchaev <danfe@FreeBSD.org>
  *  Amarendra Godbole <amarendra.godbole@gmail.com>
  *  Anders Nordby <anders@FreeBSD.org>
  *  Andreas Fehlner (fehlner@gmx.de)
  *  Andrew L. Neporada <andrew@chg.ru>
  *  Andrey <gugu@zoo.rambler.ru>
  *  Andrey Zakhvatov

Remove # $FreeBSD$ from Makefiles.

Add USES={gl,gnome,mate,sdl,xorg} missed in the last round

Remove ${PORTSDIR}/ from dependencies, categories m, n, o, and p.

With hat:	portmgr
Sponsored by:	Absolight

- Add LICENSE_FILE
- Switch to options helpers
- Regenerate patches with `make makepatch`

Convert LICENSE= "GPLxx # or later" to "GPLxx+"

Approved by:	portmgr blanket

- Allow staging as a regular user
- Bump portrevision as most docs was unreadable

Rename math/ patch-xy patches to reflect the files they modify.

Fix some non default LIB_DEPENDS

With hat:	portmgr

The FreeBSD x11@ and graphics team proudly presents
a zeising, kwm production, with help from dumbbell, bdrewery:

NEW XORG ON FREEBSD 9-STABLE AND 10-STABLE

This update switches over to use the new xorg stack by default on FreeBSD 9
and 10 stable, on osversions where vt(9) is available.
It is still possible to use the old stack by specifying WITHOUT_NEW_XORG in
/etc/make.conf .
FreeBSD 8-STABLE and released versions of FreeBSD still use
the old version.
A package repository with binary packages for new xorg will
be available soon.

This patch also contains updates of libxcb and related ports, pixman, as well

Support staging

Add NO_STAGE all over the place in preparation for the staging support (cat:
math)

- Remove MAKE_JOBS_SAFE variable

Approved by:	portmgr (bdrewery)

The FreeBSD x11 team proudly presents
an zeising, kwm, miwi, bapt, eadler production:

Xorg 7.7

Starring:
xserver 1.12.4 (new xorg only)
Mesa 8.0.4, including libGL, libGLU and dri (new xorg only)
libX11 1.5.0
libxcb 1.9
libdrm 2.4.42 (new xorg only)
freeglut 2.8.1
Also starring:
Updates to drivers and other libraries and utilities

- Update MASTER_SITES
- Add LICENSE
- Add MAKE_JOBS_SAFE
- Use PLIST_FILES instead of pkg-plist

While I'm here:
- Fix COMMENT
- Fix build when X11=on
- Make sure that configure script looks for x11 libs in right
  dir when LOCALBASE != /usr/local

PR:		ports/172033
Submitted by:	KATO Tsuguru <tkato432@yahoo.com>
Feature safe:	yes

- Add LDFLAGS to CONFIGURE_ENV and MAKE_ENV (as it was done with LDFLAGS)
- Fix all ports that add {CPP,LD}FLAGS to *_ENV to modify flags instead

PR:             157936
Submitted by:   myself
Exp-runs by:    pav
Approved by:    pav

- Get Rid MD5 support

- Remove unneeded dependency from gtk12/gtk20 [1]
- Remove USE_XLIB/USE_X_PREFIX/USE_XPM in favor of USE_XORG
- Remove X11BASE support in favor of LOCALBASE or PREFIX
- Use USE_LDCONFIG instead of INSTALLS_SHLIB
- Remove unneeded USE_GCC 3.4+

Thanks to all Helpers:
        Dmitry Marakasov, Chess Griffin, beech@, dinoex, rafan, gahr,
        ehaupt, nox, itetcu, flz, pav

PR:             116263
Tested on:      pointyhat
Approved by:    portmgr (pav)

- Welcome X.org 7.2 \o/.
- Set X11BASE to ${LOCALBASE} for recent ${OSVERSION}.
- Bump PORTREVISION for ports intalling files in ${X11BASE}.

- Add SHA256

Per distfile survey, remove Debian as a mastersite.  I cannot find any
current version of this port under Debian.  (Note: the source code to
this port is very old).  If anyone knows of a better mastersite these
days, please speak up.

SIZEify.

Switch over to MASTER_SITE_DEBIAN.
Also convert COMMENT while I'm here.

List of candidate ports from

PR:             47881
Submitted by:   Kimura Fuyuki <fuyuki@hadaly.org>

- fix MASTER_SITES   - clean up install target   - install documentation into
${DOCSDIR}   - sort pkg-plist   - add NOPORTDOCS support in pkg-plist    

remove deprecated fetch options from FETCH_BEFORE_ARGS    

Convert category math to new layout.  

Update MASTER_SITES (file moved from linuxberg.com to linux.tucows.com).