core: Fixed inline function declaration for non-gcc linkers

usage of either 'extern inline' or 'static inline' depending on function scope is recommended

parser/parse_param.h

@@ -150,7 +150,7 @@ typedef union param_hooks {
  * 	0: success, but expect a next paramter
  * 	1: success and exepect no more parameters
  */
-inline int parse_param(str *_s, pclass_t _c, param_hooks_t *_h, param_t *t);
+extern inline int parse_param(str *_s, pclass_t _c, param_hooks_t *_h, param_t *t);
 
 
 /*! \brief

raw_sock.c

@@ -391,7 +391,7 @@ error:
  *                 in _host_ order.
  * @return the partial checksum in host order
  */
-inline unsigned short udpv4_vhdr_sum(	struct udphdr* uh,
+static inline unsigned short udpv4_vhdr_sum(	struct udphdr* uh,
 										struct in_addr* src,
 										struct in_addr* dst,
 										unsigned short length)

sip_msg_clone.c

@@ -150,7 +150,7 @@ do { \
 
 
 
-inline struct via_body* via_body_cloner( char* new_buf,
+static inline struct via_body* via_body_cloner( char* new_buf,
 					char *org_buf, struct via_body *param_org_via, char **p)
 {
 	struct via_body *new_via;