Use HOMEBREW_LOGS more consistently.
Allow configuring HOMEBREW_LOGS.
bottle: improve relocatable debugging.

* When Homebrew developer mode is enabled, if a bottle is not found to
  be relocatable attempt to explain why
* Print out paths of each file that still contains the string search for
* If the string searched for was found in an executable, check to see
  if `otool` can explain the string's appearance
* If otool can't explain, see if `strings` can explain

Closes #23824.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
open-vcdiff: fix 10.9 build

Sets a C preprocessor flag to force gtest to use its own tr1 library
Fixes #23795 where open-vcdiff would fail to build on 10.9.

Closes #23832.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
install: search when formula isn't found.
subversion: update bottle to include serf.

Fixes #23840.
bottle: write to relative path if exists.
bottle: improve written bottle output.
sqlite: update bottle.
libgcrypt: don't apply patch when using clang build 500 or newer

This appears to be a non-issue with recent clang.
Patched Qt4 formula to build on Mavericks