Adjusted directories

[zh1149277309]

Remove subdirectory 'libsprec'

[H2CO3]

Thanks, but…

…um, sorry, I still don't think I should really merge this. Please review the following problems in the code:

• there's an extraneous #include <inttypes.h> in src/web_client.c. There's also a redefinition of uint32_t which is a standard fixed-width type. If you are willing to use it in the header, #include <stdint.h> instead.
• there's an un-guarded #include <alsa/asoundlib.h> in src/wav.c. It should not be included unconditionally, only if the platform has ALSA (which is currently assumed if the platform is neither _WIN32 nor __APPLE__).
• there is also trailing whitespace at different places. You can fix these by adjusting the settings of your editor so that it takes care of it automatically. You can also remove them manually after verification by git diff, for example (which usually highlights trailing whitespace).
• In src/wav.c, the indentation is incorrect at many places. This project's coding style uses TABs for indentation, not single spaces.

[zh1149277309]

Thanks for your advice, I will be more careful later.