lynx-dev USE_PSRC internals

[Leonid Pauzner]

>  While lynx is in psrc mode, SGML.c converts html it recieves to another html.

Looking into mainloop I found out the following line:

...
#endif /* DISP_PARTIAL */
#ifdef USE_PSRC
                psrc_first_tag = TRUE;
#endif
#ifndef DONT_TRACK_INTERNAL_LINKS
...

It present in large `force_reload' cycle and *not* in HTreparse_document()
cycle. Does it necessary at all? (seems no psrc problems found specific for
SOURCE_CACHE!=NONE).