Update to v094r15 release.

byuu says:

Implemented the cheat database dialog, and most of the cheat editor
dialog. I still have to handle loading and saving the cheats.bml file
for each game. I wanted to finish it today, but I burned out. It's a ton
of really annoying work to support cheat codes. There's also some issue
with the width calculation for the "code(s)" column in hiro/GTK.

Short-term:
- add input port changing support
- add other input types (mouse-based, etc)
- finish cheat codes

Long-term:
- add slotted cart loader (SGB, BSX, ST)
- add DIP switch selection window (NSS)
- add overscan masking
- add timing configuration (video/audio sync)

Not planned:
- video color adjustments (will allow emulated color vs raw color; but
  no more sliders)
- pixel shaders
- ananke integration (will need to make a command-line version to get my
  games in)
- fancy audio adjustment controls (resampler, latency, volume)
- input focus settings
- localization support (not enough users)
- window geometry memory
- anything else not in higan v094

nall/string/base.hpp

@@ -93,6 +93,7 @@ inline auto realpath(rstring name) -> string;
 inline auto programpath() -> string;
 inline auto userpath() -> string;
 inline auto configpath() -> string;
+inline auto localpath() -> string;
 inline auto sharedpath() -> string;
 inline auto temppath() -> string;
 

nall/string/platform.hpp

@@ -71,6 +71,24 @@ auto configpath() -> string {
   return result;
 }
 
+// /home/username/.local/
+// c:/users/username/appdata/local/
+auto localpath() -> string {
+  #if defined(PLATFORM_WINDOWS)
+  whcar_t path[PATH_MAX] = L"";
+  SHGetFolderPathW(nullptr, CSIDL_LOCAL_APPDATA | CSIDL_FLAG_CREATE, nullptr, 0, path);
+  string result = (const char*)utf8_t(path);
+  result.transform("\\", "/");
+  #elif defined(PLATFORM_MACOSX)
+  string result = {userpath(), "Library/Application Support/"};
+  #else
+  string result = {userpath(), ".local/"};
+  #endif
+  if(result.empty()) result = ".";
+  if(result.endsWith("/") == false) result.append("/");
+  return result;
+}
+
 // /usr/share
 // /Library/Application Support/
 // c:/ProgramData/