Update code style

Limit source code to 80 chars, and declare functions return type and
modifiers on a separate line.

This allows to avoid very long lines, and all function names are
aligned.

(We do this on VLC, and I like it.)

app/src/sys/win/net.c

@@ -2,7 +2,8 @@
 
 #include "log.h"
 
-SDL_bool net_init(void) {
+SDL_bool
+net_init(void) {
     WSADATA wsa;
     int res = WSAStartup(MAKEWORD(2, 2), &wsa) < 0;
     if (res < 0) {
@@ -12,10 +13,12 @@ SDL_bool net_init(void) {
     return SDL_TRUE;
 }
 
-void net_cleanup(void) {
+void
+net_cleanup(void) {
     WSACleanup();
 }
 
-SDL_bool net_close(socket_t socket) {
+SDL_bool
+net_close(socket_t socket) {
     return !closesocket(socket);
 }