Add support for subsections
Add support for subsections

A variable name is stored internally with its section the way it
appeared in the configuration file in order to have the information
about what parts are case-sensitive inline.

Really implement parse_section_header_ext and move the assignment of
variables to config_parse.

The variable name matching is now done in a case-away way by
cvar_name_match and cvar_section_match. Before the user sees it, it's
normalized to the two- or three-dot version.

Signed-off-by: Carlos Martín Nieto <eecb638c0e60875b4a70118790d5be43bb59c2d6@elego.de>

kissthink/libgit2,raybrad/libit2,mrksrm/Mingijura,jamieleecool/ptest,Snazz2001/libgit2,t0xicCode/libgit2,joshtriplett/libgit2,stewid/libgit2,dleehr/libgit2,mrksrm/Mingijura,Snazz2001/libgit2,MrHacky/libgit2,joshtriplett/libgit2,since2014/libgit2,skabel/manguse,falqas/libgit2,jeffhostetler/public_libgit2,Corillian/libgit2,amyvmiwei/libgit2,sim0629/libgit2,JIghtuse/libgit2,oaastest/libgit2,dleehr/libgit2,falqas/libgit2,zodiac/libgit2.js,Corillian/libgit2,evhan/libgit2,Snazz2001/libgit2,ardumont/libgit2,t0xicCode/libgit2,stewid/libgit2,whoisj/libgit2,since2014/libgit2,yongthecoder/libgit2,nokiddin/libgit2,sygool/libgit2,swisspol/DEMO-libgit2,linquize/libgit2,whoisj/libgit2,mingyaaaa/libgit2,amyvmiwei/libgit2,ardumont/libgit2,stewid/libgit2,amyvmiwei/libgit2,KTXSoftware/libgit2,claudelee/libgit2,jflesch/libgit2-mariadb,joshtriplett/libgit2,KTXSoftware/libgit2,nokiddin/libgit2,saurabhsuniljain/libgit2,nacho/libgit2,mingyaaaa/libgit2,maxiaoqian/libgit2,falqas/libgit2,linquize/libgit2,amyvmiwei/libgit2,mingyaaaa/libgit2,whoisj/libgit2,jamieleecool/ptest,linquize/libgit2,spraints/libgit2,ardumont/libgit2,raybrad/libit2,nacho/libgit2,zodiac/libgit2.js,Corillian/libgit2,chiayolin/libgit2,nacho/libgit2,iankronquist/libgit2,kenprice/libgit2,mcanthony/libgit2,Aorjoa/libgit2_maked_lib,iankronquist/libgit2,rcorre/libgit2,t0xicCode/libgit2,yongthecoder/libgit2,chiayolin/libgit2,t0xicCode/libgit2,whoisj/libgit2,rcorre/libgit2,jeffhostetler/public_libgit2,mhp/libgit2,chiayolin/libgit2,leoyanggit/libgit2,claudelee/libgit2,magnus98/TEST,rcorre/libgit2,since2014/libgit2,kissthink/libgit2,claudelee/libgit2,skabel/manguse,zodiac/libgit2.js,spraints/libgit2,spraints/libgit2,dleehr/libgit2,joshtriplett/libgit2,mingyaaaa/libgit2,linquize/libgit2,iankronquist/libgit2,mhp/libgit2,MrHacky/libgit2,sygool/libgit2,JIghtuse/libgit2,jeffhostetler/public_libgit2,raybrad/libit2,rcorre/libgit2,Tousiph/Demo1,mrksrm/Mingijura,amyvmiwei/libgit2,mrksrm/Mingijura,sim0629/libgit2,skabel/manguse,Tousiph/Demo1,raybrad/libit2,skabel/manguse,skabel/manguse,ardumont/libgit2,swisspol/DEMO-libgit2,Tousiph/Demo1,oaastest/libgit2,leoyanggit/libgit2,iankronquist/libgit2,yosefhackmon/libgit2,maxiaoqian/libgit2,mcanthony/libgit2,kenprice/libgit2,mhp/libgit2,Corillian/libgit2,saurabhsuniljain/libgit2,iankronquist/libgit2,chiayolin/libgit2,oaastest/libgit2,JIghtuse/libgit2,leoyanggit/libgit2,amyvmiwei/libgit2,whoisj/libgit2,joshtriplett/libgit2,swisspol/DEMO-libgit2,Tousiph/Demo1,oaastest/libgit2,magnus98/TEST,maxiaoqian/libgit2,stewid/libgit2,jamieleecool/ptest,kenprice/libgit2,maxiaoqian/libgit2,jflesch/libgit2-mariadb,falqas/libgit2,iankronquist/libgit2,swisspol/DEMO-libgit2,kissthink/libgit2,yosefhackmon/libgit2,nokiddin/libgit2,whoisj/libgit2,mingyaaaa/libgit2,kissthink/libgit2,saurabhsuniljain/libgit2,JIghtuse/libgit2,saurabhsuniljain/libgit2,Aorjoa/libgit2_maked_lib,evhan/libgit2,sim0629/libgit2,Tousiph/Demo1,jamieleecool/ptest,kenprice/libgit2,spraints/libgit2,MrHacky/libgit2,yongthecoder/libgit2,chiayolin/libgit2,stewid/libgit2,sim0629/libgit2,Snazz2001/libgit2,raybrad/libit2,mhp/libgit2,falqas/libgit2,jeffhostetler/public_libgit2,yongthecoder/libgit2,MrHacky/libgit2,dleehr/libgit2,since2014/libgit2,saurabhsuniljain/libgit2,linquize/libgit2,sim0629/libgit2,skabel/manguse,jflesch/libgit2-mariadb,evhan/libgit2,nokiddin/libgit2,ardumont/libgit2,magnus98/TEST,yosefhackmon/libgit2,Snazz2001/libgit2,t0xicCode/libgit2,JIghtuse/libgit2,chiayolin/libgit2,claudelee/libgit2,KTXSoftware/libgit2,linquize/libgit2,Tousiph/Demo1,mcanthony/libgit2,stewid/libgit2,kenprice/libgit2,rcorre/libgit2,t0xicCode/libgit2,leoyanggit/libgit2,KTXSoftware/libgit2,falqas/libgit2,since2014/libgit2,magnus98/TEST,mingyaaaa/libgit2,joshtriplett/libgit2,leoyanggit/libgit2,dleehr/libgit2,mcanthony/libgit2,mcanthony/libgit2,since2014/libgit2,MrHacky/libgit2,ardumont/libgit2,kissthink/libgit2,jeffhostetler/public_libgit2,zodiac/libgit2.js,mhp/libgit2,KTXSoftware/libgit2,claudelee/libgit2,jflesch/libgit2-mariadb,yongthecoder/libgit2,claudelee/libgit2,sim0629/libgit2,nokiddin/libgit2,magnus98/TEST,saurabhsuniljain/libgit2,jeffhostetler/public_libgit2,leoyanggit/libgit2,yosefhackmon/libgit2,Aorjoa/libgit2_maked_lib,sygool/libgit2,evhan/libgit2,mcanthony/libgit2,yongthecoder/libgit2,spraints/libgit2,rcorre/libgit2,kenprice/libgit2,maxiaoqian/libgit2,KTXSoftware/libgit2,yosefhackmon/libgit2,magnus98/TEST,Aorjoa/libgit2_maked_lib,zodiac/libgit2.js,mrksrm/Mingijura,jflesch/libgit2-mariadb,maxiaoqian/libgit2,sygool/libgit2,oaastest/libgit2,swisspol/DEMO-libgit2,yosefhackmon/libgit2,kissthink/libgit2,JIghtuse/libgit2,Aorjoa/libgit2_maked_lib,swisspol/DEMO-libgit2,jflesch/libgit2-mariadb,oaastest/libgit2,spraints/libgit2,sygool/libgit2,nacho/libgit2,MrHacky/libgit2,Snazz2001/libgit2,Corillian/libgit2,mrksrm/Mingijura,dleehr/libgit2,nokiddin/libgit2,mhp/libgit2,Corillian/libgit2,sygool/libgit2