Makefile: Add rules to create tags and TAGS.
Makefile: Add rules to create tags and TAGS.

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