Fix photonuclear cross section biasing when using cross section enhancement

[ftessier]

Add ausgab calls before and after a photonuclear interactions, in order to handle cross section enhancement (xcse) correctly. Without these calls, there is no compensation for the enhanced cross section, hence the photonuclear cross section is effectively increased.

Also, update a couple loops that print out the ausgab flags (IAUSFL) values, to include the photonuclear attenuation input value, and fix a couple typos.

[mainegra]

@ftessier this ended up being quite an undertaking!

[ftessier]

Fixed the photonuclear xcse biasing across EGSnrc. There are other instances where photonuclear asugab should be called, notably when setting ZLAST, but I want to keep this commit about xcse. Also updated the calls within the Fano test, for consistency, but that is moot because the Fano test will fail anyways when photonuclear is turned on, since photon energy is lost, not deposited.

I have checked that all applications and BEAM_EX10MeVe compile as expected.

@nrc-cnrc/egsnrc please review as soon as possible so that we can include this fix in release 2023.

[ftessier]

Note that there are other instances of photon interaction ausgab calls, without a corresponding photonuclear call. But the ones I reviewed seem fine, since they have to do with what happens with the photon afterwards, whereas in the photonuclear interaction the photon is simply discarded. The following egrep regexes prove useful, since Rayleigh interactions are a good way to catch instances where the photonuclear interaction should also be handled:

egrep -ilR 'iarg.*2[3,4]' HEN_HOUSE/                   ### catch Rayleigh iargs in mortran 
egrep -ilR 'ausfl.*2[3,4,5]' HEN_HOUSE/                ### catch Rayleigh branches in mortran
egrep -ilR 'if.*ausfl' HEN_HOUSE/                      ### catch all ausfl branches in mortran
egrep -ilR 'BeforeRayleigh|AfterRayleigh' HEN_HOUSE/   ### catch Rayleigh calls in c++ 

@mainegra you might want to double-check egs_cbct and egs_fac, especially the forced detection part, although of course there is no expected impact of photonuclear attenuation in these scenarios!

[rtownson]

All the changes here look correct. I'm still looking at egs_cbct and egs_fac but so far I don't think they need any changes.

[blakewalters]

Looks good to me!

[ftessier]

Squashed the commits.