(Only the first 10 of 30 ports in this commit are shown above. )
Add llvm32 and clang32 ports modeled on the llvm33 and clang33 ports.
These ports install binaries with "32" suffixes and most data lives in
${PREFIX}/llvm32 so there are no conflicts.
NOTE: devel/llvm and lang/clang will shortly be removed in favor of
these ports.