Changed version to 0.70a1
Merge branch 'master' into anshul1912/master
Merge remote-tracking branch 'ruslan/makefile'
Merge remote-tracking branch 'ruslan/spupng'
spupng port to C (#19)
Merge branch 'rkuchumov/spupng'
Some changes to Makefile
Merge branch 'pr/n26_rkuchumov'
Removed Problem compiling c file in Visual Studio

Also moved -I include flags in INCLUDE variable since preprocessor
needs the location of header file, while compiling c to object file.

In src/dvb_subtitle_decoder.h added cpp guard

changed dvb cpp extension to c and removed some extra space at end of
line.
Merge remote-tracking branch 'upstream/master'
fix teletext detection by parsing all desc tag

Fix #20
Renamed all 608*.cpp to 608.c
Rename everything else to .c
More
Structures before functions
telxcc.c compatible to c