Merge pull request #172 from JillTyrell/master

Adding LLVM/Clang 3.4, a C/C++ compiler infrastructure.
clang: add a patch to use correct dynlinker
lua: add pkgconfig file (fixes grafx2)

we install a lua-5.1 and lua-5.2 .pc file.
grafx2 builds fine against lua 5.2 and seems to work correctly.
Create pkg/lzo

LZO is a data compression library which is suitable for data de-/compression in real-time.
Merge pull request #173 from redglasses/master

Adding pkg/lzo
Adding pkg/acl

Commands for manipulating POSIX Access Control Lists
Merge pull request #174 from redglasses/master

Adding pkg/acl
Adding pkg/sparse

A semantic parser for C
Merge pull request #175 from redglasses/master

Adding pkg/sparse
su: one second delay on fail is enough
Bump pcre version to 8.34 (latest)

Tested rebuilds of nginx, nmap and php... all were fine
Build pkg/pcre respecting butch-optflags
luajit: do not replace lua by default
swig: depends on pcre
libxml2: fix pkgconfig file for static linking
sparse: dont fail when gtk2 is installed, be verbose
strace: unbreak with recent kernel headers
bump kernel-headers to 3.12.6-1
kernel-headers: fix issues with ethdr and in6_addr
Go has a non-https download URL, so it need not depend on wget.