removing LSD, not using it for now
bump to 0.7.4
remove unneded code
java java
killing code. love it.
Merge branch 'master' into extractor-java

Conflicts:
	ext/lsd/COPYING
	ext/lsd/Makefile.OSX
	ext/lsd/Makefile.defaults
	ext/lsd/Makefile.linux32
	ext/lsd/Makefile.linux64
	ext/lsd/Makefile.mingw
	ext/lsd/Makefile.mingw64
	ext/lsd/liblsd-linux32.so
	ext/lsd/liblsd-linux64.so
	ext/lsd/liblsd.def
	ext/lsd/liblsd.dll
	ext/lsd/liblsd.dylib
	ext/lsd/liblsd64.dll
	ext/lsd/lsd.c
	ext/lsd/lsd.h
	lib/tabula/line_segment_detector.rb
	tabula-extractor.gemspec
more porting ruby -> java