This causes configure of gcc/binutils to fail its test for sys/time.h, which
in turn causes compilation of gcc/binutils to fail.
Found trying to do a @bootstrap-raw build for ARM.
Cleaned up some header style violations, making sure there are two blank lines after the header guards.
This fixes the posix header part of #2191.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39288 a95241bf-73f2-0310-859d-f6bbb57e9c96