Cleanup deps_info.json. NFC.

- SDL_getenv: was removed from JS in #12319
- getenv: was removed from JS in #11885
- getlogin: depends on getenv so used to require JS?
- __ctype_b_loc: implemented in pure C
- __ctype_tolower_loc: implemented in pure C
- __ctype_toupper_loc: implemented in pure C
- calloc/realloc: implemented in pure C
- tmpnam: can't tell why this was ever in here
- freelocale/freeaddrinfo: implemented in pure C
- newlocale: implemented in pure C
- realpath: implemented in pure C
- strerr: implemented in pure C
- ttyname: implemented in pure C

For these two symbols I can see no evidence as to why they were ever added here.
- freopen
- syslog

Author: sbc100

src/library.js

@@ -703,11 +703,6 @@ LibraryManager.library = {
 #endif
   },
 
-  // This object can be modified by the user during startup, which affects
-  // the initial values of the environment accessible by getenv. (This works
-  // in both fastcomp and upstream).
-  $ENV: {},
-
   getloadavg: function(loadavg, nelem) {
     // int getloadavg(double loadavg[], int nelem);
     // http://linux.die.net/man/3/getloadavg

src/library_wasi.js

@@ -11,6 +11,10 @@ var WasiLibrary = {
     _exit(code);
   },
 
+  // This object can be modified by the user during startup, which affects
+  // the initial values of the environment accessible by getEnvStrings/getenv.
+  $ENV: {},
+
   $getEnvStrings__deps: ['$ENV', '$getExecutableName'],
   $getEnvStrings: function() {
     if (!getEnvStrings.strings) {

tools/deps_info.py

@@ -58,11 +58,7 @@
   'SDL_OpenAudio': ['malloc', 'free'],
   'SDL_PushEvent': ['malloc', 'free'],
   'SDL_free': ['free'],
-  'SDL_getenv': ['malloc', 'free'],
   'SDL_malloc': ['malloc', 'free'],
-  '__ctype_b_loc': ['malloc', 'free'],
-  '__ctype_tolower_loc': ['malloc', 'free'],
-  '__ctype_toupper_loc': ['malloc', 'free'],
   '__cxa_allocate_exception': ['malloc', 'free', 'setThrew'],
   '__cxa_begin_catch': ['_ZSt18uncaught_exceptionv', 'setThrew'],
   '__cxa_end_catch': ['free'],
@@ -92,7 +88,6 @@
   'alcGetProcAddress': ['emscripten_GetAlcProcAddress'],
   'alcGetString': ['malloc', 'free'],
   'bind': ['htonl', 'htons', 'ntohs'],
-  'calloc': ['malloc', 'free'],
   'connect': ['htonl', 'htons', 'ntohs'],
   'ctime': ['_get_tzname', '_get_daylight', '_get_timezone', 'malloc', 'free'],
   'ctime_r': ['_get_tzname', '_get_daylight', '_get_timezone', 'malloc', 'free'],
@@ -176,14 +171,10 @@
   'emscripten_wget_data': ['malloc', 'free'],
   'formatString': ['strlen'],
   'freeaddrinfo': ['free'],
-  'freelocale': ['free'],
-  'freopen': ['free'],
   'gai_strerror': ['malloc', 'free'],
   'getaddrinfo': ['malloc', 'free', 'htonl', 'htons', 'ntohs'],
-  'getenv': ['malloc', 'free'],
   'gethostbyname': ['malloc', 'free', 'htons', 'ntohs', 'memcpy'],
   'gethostbyname_r': ['malloc', 'free', 'htons', 'ntohs', 'memcpy'],
-  'getlogin': ['malloc', 'free'],
   'getnameinfo': ['htons', 'ntohs'],
   'getpeername': ['htons', 'ntohs'],
   'getrusage': ['memset'],
@@ -204,12 +195,9 @@
   'mktime': ['_get_tzname', '_get_daylight', '_get_timezone', 'malloc', 'free'],
   'mmap': ['memalign', 'memset', 'malloc', 'free'],
   'munmap': ['memalign', 'memset', 'malloc', 'free'],
-  'newlocale': ['malloc', 'free'],
   'nl_langinfo': ['malloc', 'free'],
   'pthread_create': ['malloc', 'free', 'emscripten_main_thread_process_queued_calls'],
   'readdir': ['malloc', 'free'],
-  'realloc': ['malloc', 'free'],
-  'realpath': ['malloc', 'free'],
   'recv': ['htons', 'ntohs'],
   'send': ['htons', 'ntohs'],
   'setjmp': ['setThrew', 'realloc', 'testSetjmp', 'saveSetjmp'],
@@ -218,13 +206,9 @@
   'sleep': ['usleep'],
   'socket': ['htonl', 'htons', 'ntohs'],
   'socketpair': ['htons', 'ntohs'],
-  'strerror': ['malloc', 'free'],
   'stringToNewUTF8': ['malloc', 'free'],
-  'syslog': ['malloc', 'htons', 'ntohs'],
   'timegm': ['_get_tzname', '_get_daylight', '_get_timezone', 'malloc', 'free'],
   'times': ['memset'],
-  'tmpnam': ['malloc', 'free'],
-  'ttyname': ['malloc', 'free'],
   'tzset': ['_get_tzname', '_get_daylight', '_get_timezone', 'malloc', 'free'],
   'uuid_clear': ['memset'],
   'uuid_compare': ['memcmp', 'memcpy', 'memset'],