When you install emsdk out of the box, the directory is no longer `$(EMSDK_PATH)/python/33.7.4_64bit` but rather `$(EMSDK_PATH)/python/3.7.4-pywin32_64bit` noting the `3.7.4-pywin32_64bit` change on the last file.
Thus, without adjusting this in the raylib Makefile it will throw an error:
```
PS C:\raylib\raylib\src> make PLATFORM=PLATFORM_WEB -B emcc -c core.c -Wall -D_DEFAULT_SOURCE -Wno-missing-braces -Werror=pointer-arith -fno-strict-aliasing -std=gnu99 -Os -s USE_GLFW=3 -I. -Iexternal/glfw/include -Iexternal/glfw/deps/mingw -DPLATFORM_WEB -DGRAPHICS_API_OPENGL_ES2 '"python"' is not recognized as an internal or external command, operable program or batch file.
```
However, changing this line in the Makefile compiles raylib for web as expected
`"raylib library generated (libraylib.bc)!"`
* Update compilation warning flags
Removed the -Wall flag that allow many warnings and added manually all the warning flags that don't generate warnings in the src/external folder.
Specifically, these are some of the flags reporting errors in src/external:
-Wmissing-prototypes
-Wunused-variable
-Wunused-value
-Wunused-parameter
-Wunused-function
* Uptade compilation flags in examples with missing -std=c99
Added in a check for x86 and x86_64 branches of android
Added in $(OS) checks to see if we're running on windows or *nix
Added a default location for android ndks and sdks at /usr/lib/android
* added multi channel sound replay to raudio
added -fPIC to Makefile for Linux
added simple lighting and audio multi channel to examples Makefile
* not properly reporting audio buffer pool size...
With v2.5.0 out, increment API_VERSION, so binaries dynamically linked
against the released raylib aren't accidentally paired with a development
or later released raylib that may be incompatible.
