Fix return types and undefined symbols

freelocale is a weird beast: some of the bsds have it returning an
int, everything else has it returning void. *shrug*

Author: mrhota

src/unix/bsd/apple/mod.rs

@@ -369,19 +369,6 @@ pub const CRNCYSTR: ::nl_item = 56;
 
 pub const D_MD_ORDER: ::nl_item = 57;
 
-pub const ALTMON_1: ::nl_item = 58;
-pub const ALTMON_2: ::nl_item = 59;
-pub const ALTMON_3: ::nl_item = 60;
-pub const ALTMON_4: ::nl_item = 61;
-pub const ALTMON_5: ::nl_item = 62;
-pub const ALTMON_6: ::nl_item = 63;
-pub const ALTMON_7: ::nl_item = 64;
-pub const ALTMON_8: ::nl_item = 65;
-pub const ALTMON_9: ::nl_item = 66;
-pub const ALTMON_10: ::nl_item = 67;
-pub const ALTMON_11: ::nl_item = 68;
-pub const ALTMON_12: ::nl_item = 69;
-
 pub const EXIT_FAILURE: ::c_int = 1;
 pub const EXIT_SUCCESS: ::c_int = 0;
 pub const RAND_MAX: ::c_int = 2147483647;
@@ -1124,8 +1111,8 @@ extern {
                    termp: *mut termios,
                    winp: *mut ::winsize) -> ::pid_t;
     pub fn duplocale(base: ::locale_t) -> ::locale_t;
-    pub fn freelocale(loc: ::locale_t);
-    pub fn localeconv_l(loc: ::locale_t) -> *mut ::locale_t;
+    pub fn freelocale(loc: ::locale_t) -> ::c_int;
+    pub fn localeconv_l(loc: ::locale_t) -> *mut lconv;
     pub fn newlocale(mask: ::c_int,
                      locale: *const ::c_char,
                      base: ::locale_t) -> ::locale_t;

src/unix/bsd/freebsdlike/mod.rs

@@ -713,8 +713,9 @@ extern {
                         timeout: *const ::timespec) -> ::c_int;
     pub fn sigwaitinfo(set: *const sigset_t,
                        info: *mut siginfo_t) -> ::c_int;
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
     pub fn duplocale(base: ::locale_t) -> ::locale_t;
-    pub fn freelocale(loc: ::locale_t);
+    pub fn freelocale(loc: ::locale_t) -> ::c_int;
     pub fn newlocale(mask: ::c_int,
                      locale: *const ::c_char,
                      base: ::locale_t) -> ::locale_t;

src/unix/bsd/openbsdlike/bitrig.rs

@@ -305,8 +305,9 @@ extern {
                         newp: *mut ::c_void,
                         newlen: ::size_t)
                         -> ::c_int;
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
     pub fn duplocale(base: ::locale_t) -> ::locale_t;
-    pub fn freelocale(loc: ::locale_t);
+    pub fn freelocale(loc: ::locale_t) -> ::c_int;
     pub fn newlocale(mask: ::c_int,
                      locale: *const ::c_char,
                      base: ::locale_t) -> ::locale_t;

src/unix/bsd/openbsdlike/netbsd.rs

@@ -427,7 +427,7 @@ extern {
                        info: *mut siginfo_t) -> ::c_int;
     pub fn duplocale(base: ::locale_t) -> ::locale_t;
     pub fn freelocale(loc: ::locale_t);
-    pub fn localeconv_l(loc: ::locale_t) -> *mut ::locale_t;
+    pub fn localeconv_l(loc: ::locale_t) -> *mut lconv;
     pub fn newlocale(mask: ::c_int,
                      locale: *const ::c_char,
                      base: ::locale_t) -> ::locale_t;

src/unix/mod.rs

@@ -718,7 +718,6 @@ extern {
     pub fn mkdtemp(template: *mut ::c_char) -> *mut ::c_char;
     pub fn futimes(fd: ::c_int, times: *const ::timeval) -> ::c_int;
     pub fn nl_langinfo(item: ::nl_item) -> *mut ::c_char;
-    pub fn nl_langinfo_l(item: ::nl_item, locale: locale_t) -> *mut ::c_char;
 }
 
 cfg_if! {

src/unix/solaris/mod.rs

@@ -880,6 +880,7 @@ extern {
                       buflen: ::size_t) -> *const passwd;
     pub fn readdir(dirp: *mut ::DIR) -> *const ::dirent;
     pub fn fdatasync(fd: ::c_int) -> ::c_int;
+    pub fn nl_langinfo_l(item: ::nl_item, locale: ::locale_t) -> *mut ::c_char;
     pub fn duplocale(base: ::locale_t) -> ::locale_t;
     pub fn freelocale(loc: ::locale_t);
     pub fn newlocale(mask: ::c_int,