Add macro to browse reloc and sym entries
Add macro to browse reloc and sym entries

Introduce for_each_elem to browse relocation entries and symbols of a
section.

metaeducation/tcc,metaeducation/tcc,alfonsokim/tinycc,run4flat/tinycc,mirror/tinycc,gfwilliams/tinycc,andrewchambers/tccmirror,avih/tinycc,seyko2/tinycc,rchandramouli/tinycc,alfonsokim/tinycc,seyko2/tinycc,alfonsokim/tinycc,run4flat/tinycc,andrewchambers/tccmirror,gfwilliams/tinycc,avih/tinycc,rchandramouli/tinycc,run4flat/tinycc,mirror/tinycc,run4flat/tinycc,leeduhem/tinycc,alfonsokim/tinycc,rchandramouli/tinycc,leeduhem/tinycc,seyko2/tinycc,andrewchambers/tccmirror,mingodad/tinycc,rchandramouli/tinycc,gfwilliams/tinycc,avih/tinycc,code4game/tinycc,alfonsokim/tinycc,leeduhem/tinycc,gfwilliams/tinycc,fstudio/tinycc,run4flat/tinycc,fstudio/tinycc,fstudio/tinycc,fstudio/tinycc,mirror/tinycc,fstudio/tinycc,andrewchambers/tccmirror,gfwilliams/tinycc,code4game/tinycc,andreiw/tinycc,code4game/tinycc,seyko2/tinycc,rchandramouli/tinycc,leeduhem/tinycc,metaeducation/tcc,andrewchambers/tccmirror,avih/tinycc,mirror/tinycc,mingodad/tinycc,mingodad/tinycc,mingodad/tinycc,andreiw/tinycc,andreiw/tinycc,leeduhem/tinycc,metaeducation/tcc,metaeducation/tcc,seyko2/tinycc