This commit removes the architecture-specific headers, by keeping only the OS-specific ones.
The different headers were needed to keep the legacy Windows header, after we created the "procptr32_t" (4 bytes) and "procptr64_t" (8 bytes) variables.
We created these variables because the "peekProc" functions read as many bytes as the variable can hold. A pointer is 4 bytes on 32 bit platforms and 8 bytes on 64 bit ones.
Now there's a new variable, called "procptr_t" and with a size of 8 bytes (unsigned long long).
We had a "peekProc" template function which returned the value stored at the specified memory address, but it has been used only to read pointers so far.
Since we needed a new function that checks the process architecture and sets the correct size of the memory to read, I decided to "recycle" it.
