auto-fix dependencies in "pkgs"

Left one dependency broken: "drracket" currently depends on "htdp" for
a test. That needs to be fixed by removing the dependency (moving the
test to "htdp?), instead of changing the declared dependencies.

original commit: 51290fd2a95def6bb3b6d3d735cb62444e157553

pkgs/compatibility-lib/info.rkt

@@ -1,2 +1,3 @@
 #lang setup/infotab
 (define collection 'multi)
+(define deps '("base"))

pkgs/slideshow-pkgs/slideshow-exe/info.rkt

@@ -2,5 +2,9 @@
 
 (define collection 'multi)
 
-(define deps '("slideshow-lib"))
+(define deps '("base"
+               "compatibility-lib"
+               "gui-lib"
+               "pict-lib"
+               "slideshow-lib"))
 (define implies '("slideshow-lib"))