[sanitizer] Add fgets, fputs and puts into sanitizer_common

Summary:
Add fgets, fputs and puts to sanitizer_common. This adds ASAN coverage
for these functions, extends MSAN support from fgets to fputs/puts and
extends TSAN support from puts to fputs.

Fixes: https://github.com/google/sanitizers/issues/952

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D46545

llvm-svn: 334450