Recommit of r263252, [ELF] - Change all messages to lowercase to be consistent.

which was reverted because included
unrelative changes by mistake.

Original commit message:

[ELF] - Change all messages to lowercase to be consistent.

That is directly opposite to http://reviews.llvm.org/D18045,
which was reverted.

This patch changes all messages to start from lowercase letter if
they were not before.

That is done to be consistent with clang.

Differential revision: http://reviews.llvm.org/D18085

llvm-svn: 263337
diff --git a/lld/test/ELF/sysroot.s b/lld/test/ELF/sysroot.s
index 35154be..202b105 100644
--- a/lld/test/ELF/sysroot.s
+++ b/lld/test/ELF/sysroot.s
@@ -14,7 +14,7 @@
 // We need to be sure that there is no suitable library in the /lib directory
 // RUN: not ld.lld -o %t/r %t/m.o -L/lib -l:libls.a 2>&1 \
 // RUN:     | FileCheck --check-prefix=NOLIB %s
-// NOLIB: Unable to find library -l:libls.a
+// NOLIB: unable to find library -l:libls.a
 
 // Should just remove the '=' symbol if --sysroot is not specified.
 // Case 1: relative path