Version.c, [...]: Update G77 version number to 0.5.27.

Version.c, [...]: Update G77 version number to 0.5.27.

libf2c:
	* libF77/Version.c, libI77/Version.c, libU77/Version.c: Update G77
	version number to 0.5.27.

gcc:
	* README, cpp.texi, gcc.texi, version.c: Update version number to
	3.1.
	* cpp.1, gcov.1, gcc.1: Regenerate.

gcc/f:
	* version.c, root.texi: Update GCC version number to 3.1.  Update
	G77 version number to 0.5.27.
	* BUGS, NEWS: Regenerate.

From-SVN: r39901