glibc: Requires GCC 4.7 or later [Linux]
glibc: Requires GCC 4.7 or later [Linux]

Fix the error:
checking if gcc-4.4 -B/home/linuxbrew/.linuxbrew/opt/binutils/bin/
is sufficient to build libc... no configure: error:
*** These critical programs are missing or too old: compiler
*** Check the INSTALL file for required versions.

Closes Linuxbrew/homebrew-core#4256.

Signed-off-by: Michka Popoff <7b0496f66f66ee22a38826c310c38b415671b832@gmail.com>

maxim-belkin/homebrew-core,Linuxbrew/homebrew-core,LinuxbrewTestBot/homebrew-core,Linuxbrew/homebrew-core,rwhogg/homebrew-core,LinuxbrewTestBot/homebrew-core,rwhogg/homebrew-core,maxim-belkin/homebrew-core