In delta.c make all inline functions and rs_getinput() static line.
In delta.c make all inline functions and rs_getinput() static line.

These functions are all private to the compilation unit. This may give
the compiler more room for optimization.

yrgoldteeth/librsync,sourcefrog/librsync,sourcefrog/librsync,dbaarda/librsync,dbaarda/librsync,sourcefrog/librsync,librsync/librsync,librsync/librsync,sourcefrog/librsync,librsync/librsync,yrgoldteeth/librsync,librsync/librsync,yrgoldteeth/librsync,yrgoldteeth/librsync,dbaarda/librsync,dbaarda/librsync