ENV/std: Do not mkdir lib for Linuxbrew
ENV/std: Do not mkdir lib for Linuxbrew

To work around a bug in glibc 2.19 that is fixed in 2.20
add both lib and prefix to LD_LIBRARY_PATH.
segfault when LD_LIBRARY_PATH is set to non-existent directory.

See Linuxbrew/linuxbrew#841.
Closes Linuxbrew/linuxbrew#982.

Linuxbrew/brew,Linuxbrew/brew,hanxue/linuxbrew,hanxue/linuxbrew,rwhogg/brew,rwhogg/brew,Linuxbrew/brew,rwhogg/brew,maxim-belkin/brew,maxim-belkin/brew,Linuxbrew/brew,maxim-belkin/brew,hanxue/linuxbrew