19:15 jrm 

Update cad/gmsh to 2.13.2; fix knob issue; other changes

- Upgrade to version 2.13.2
- Update MASTER_SITES to only include new gmsh site
- Remove no-longer-needed definitions of DISTFILES, EXTRACT_ONLY, and WRKSRC
- The licensing situation is simpler now:  Gmsh itself is released under
  GPLv3+ [1], TetGen under AGPLv3+ [2], and METIS under an APACHE2 license [3]
  For now, TAUCS is the only component released under a non-standard license [4]
- Fix misnamed KNOB in KNOB_DESC=, so `make config` shows descriptions
- Fix errors/warnings reported by portlint and poudriere testport
  - Add missing entries to LIB_DEPENDS=
  - Add blaslapack to USES=
  - Change USE_GL=yes to USE_GL=gl glu
  - Add USE_XORG=x11 xext xfixes xft
  - Redo patches with make makepatch

(Only the first 15 lines of the commit message are shown above )