patchelf 0.8: New formula
linux-headers 3.15.6: New formula
glibc 2.19: New formula
Linuxbrew: Use patchelf to set RPATH

Also set the dynamic loader ld.so if glibc is installed.

Closes #7
patchelf: Use tarball without autotools dependency
Merge branch 'master' into bottle

Conflicts:
	Library/Homebrew/formula_installer.rb
linux-headers 3.15.9
boost: Use the requested GCC version on Linuxbrew
bzip2 1.0.6: New formula
Linuxbrew: Set the dynamic library search path
Linuxbrew: Use commas in -Wl,-rpath,PATH

Closes #119
Linuxbrew: Set the dynamic linker

Set the dynamic linker if glibc is installed