Migrate from LIBWGET_EXPORT to WGETAPI
This pull request aims to migrate from using the following form for exporting symbols:
void
wget_millisleep(int ms) LIBWGET_EXPORT;
to this form:
WGETAPI void
wget_millisleep(int ms);
Here, the attribute for exporting a library symbol now appears before the function prototype. Also, the macro for exporting is changed to WGETAPI
which is more readable and in-line with various other libraries.
Once merged, this should close #122 (closed)