modules/rpm: add example

Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>

manual tests/4 rpm/lib.c

@@ -0,0 +1,6 @@
+#include"lib.h"
+
+char *meson_print(void)
+{
+  return "Hello, world!";
+}

manual tests/4 rpm/lib.h

@@ -0,0 +1 @@
+char *meson_print(void);

manual tests/4 rpm/main.c

@@ -0,0 +1,8 @@
+#include<lib.h>
+#include<stdio.h>
+int main(int argc, char **argv)
+{
+  char *t = meson_print();
+  printf("%s", t);
+  return 0;
+}

manual tests/4 rpm/meson.build

@@ -0,0 +1,13 @@
+project('test spec', 'c')
+
+rpm = import('rpm')
+dependency('zlib')
+
+lib = shared_library('mesontest_shared', ['lib.c', 'lib.h'],
+                     version : '0.1', soversion : '0',
+                     install : true)
+executable('mesontest-bin', 'main.c',
+           link_with : lib,
+           install : true)
+
+rpm.generate_spec()