java: Changed size_t and unsigned int to int in array declarations. Renamed buf to buffer where necesarry. Moved most Java array typemaps to java_buffer.i. Fixed some String buffers.

Signed-off-by: Petre Eftime <petre.p.eftime@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

Conflicts:
	src/upm.i

src/mhz16/javaupm_mhz16.i

@@ -3,8 +3,7 @@
 %include "cpointer.i"
 %include "typemaps.i"
 %include "arrays_java.i";
-
-%apply signed char[] {unsigned char *};
+%include "../java_buffer.i"
 
 %apply int *OUTPUT { int *gas, int *temp };