Update Handy and FCEUmm info files

dist/info/fceumm_libretro.info

@@ -1,8 +1,12 @@
 display_name = "NES / Famicom (FCEUmm)"
-supported_extensions = "nes|unif|nsf"
+supported_extensions = "nes|fds|unif|nsf"
 authors = "CaH4e3|FCEU Team"
 corename = "FCEUmm"
 manufacturer = "Nintendo"
 systemname = "Nintendo Entertainment System"
 license = "GPLv2"
 permissions = ""
+firmware_count = 1
+firmware0_desc = "disksys.rom (Famicom Disk System BIOS)"
+firmware0_path = "disksys.rom"
+firmware0_opt = "false"

dist/info/handy_libretro.info

@@ -1,4 +1,5 @@
 display_name = "Lynx (Handy)"
+authors = "K. Wilkins"
 supported_extensions = "lnx"
 corename = "Handy"
 manufacturer = "Atari"