Make more symbols for export. * liboctave/randgamma.h: Add OCTAVE_API modifier to oct_randg and oct_fill_randg * liboctave/randmtzig.h: Add OCTAVE_API modifier to oct_init_by_int, oct_init_by_array, oct_init_by_entropy, oct_get_state, oct_set_state, oct_randu, oct_randn, oct_rande, oct_fill_randu, oct_fill_randn and oct_fill_rande. * liboctave/randpoisson.h: Add OCTAVE_API modifier to oct_randp and oct_fill_randp. * src/xpow.h: Add OCTINTERP_API modifier to xpow and elem_xpow (all variants).

old mode 100644
new mode 100755
--- a/liboctave/randpoisson.h
+++ b/liboctave/randpoisson.h
@@ -29,8 +29,8 @@
 extern "C" {
 #endif
 
-extern double oct_randp (double L);
-extern void oct_fill_randp (double L, octave_idx_type n, double *p);
+extern OCTAVE_API double oct_randp (double L);
+extern OCTAVE_API void oct_fill_randp (double L, octave_idx_type n, double *p);
 
 #ifdef  __cplusplus
 }