Updated makefile to allow for DESTDIR

Allows the makefile to install to a root defined by DESTDIR, if DESTDIR is provided in the command line.  Otherwise, it installs to the default location
Fix Darwin version numbering
Fix -install_name for dynamic library under OSX
code: add support for all syslog facilities, see https://github.com/HardySimpson/zlog/issues/43
Merge pull request #45 from igorefremov/patch-1

Updated makefile to allow for DESTDIR
Merge pull request #46 from basho/bugfix/osx-version-12

Fix Darwin version numbering
Merge branch 'tmp'

Conflicts:
	src/makefile
test: add long log test, as someone told me long log maybe lost
doc: fit github's README.md
GettingStart-CN.txt typo
doc: try readme.md again
doc: for README.md again
doc: for README.md agag
doc: rd agagag
Merge pull request #50 from darrenfang/patch-1

GettingStart-CN.txt typo
GettingStart-CN.txt typo
Merge branch 'master' of github.com:HardySimpson/zlog
Merge remote-tracking branch 'upstream/master'