Modifications to .gitignore to ignore .os files (SCons build standard) as well...

Modifications to .gitignore to ignore .os files (SCons build standard) as well as some other SCons generated files.

.gitignore

@@ -2,8 +2,17 @@
 
 # Auto generated files
 HallCDict.cxx
+HallCDict.C
 HallCDict.h
 HallCDict.o
+NormAnaDict.C
+NormAnaDict.h
+THaScalDict.C
+THaScalDict.h
+THaDecDict.C
+THaDecDict.h
+haDict.h
+haDict.C
 hcana
 
 # scons stuff
@@ -16,6 +25,7 @@ config.log
 *.[oad]
 *~
 *.so
+*.os
 \#*\#
 
 # Examples directory