Removing unused/terminally broken configure options:

--disable-async-dns
--disable-build-xpfe
--disable-editor-api-log

Makefile.in

@@ -128,9 +128,7 @@ ifdef MOZ_JPROF
 DIRS        += tools/jprof
 endif
 
-ifdef MOZ_BUILD_XPFE
 DIRS		+= xpfe
-endif
 
 DIRS		+= xpinstall
 

config/autoconf.mk.in

@@ -69,7 +69,6 @@ NS_TRACE_MALLOC = @NS_TRACE_MALLOC@
 USE_ELF_DYNSTR_GC = @USE_ELF_DYNSTR_GC@
 MOZ_MAIL_NEWS	= @MOZ_MAIL_NEWS@
 MOZ_BRPROF	= @MOZ_BRPROF@
-NO_UNIX_ASYNC_DNS = @NO_UNIX_ASYNC_DNS@
 BUILD_SHARED_LIBS = @BUILD_SHARED_LIBS@
 BUILD_STATIC_LIBS = @BUILD_STATIC_LIBS@
 MOZ_STATIC_COMPONENTS = @MOZ_STATIC_COMPONENTS@
@@ -78,7 +77,6 @@ MOZ_STATIC_COMPONENT_LIBS = @MOZ_STATIC_COMPONENT_LIBS@
 ENABLE_TESTS	= @ENABLE_TESTS@
 IBMBIDI = @IBMBIDI@
 BUILD_IDLC = @BUILD_IDLC@
-MOZ_EDITOR_API_LOG = @MOZ_EDITOR_API_LOG@
 MOZ_ENDER_LITE = @MOZ_ENDER_LITE@
 MOZ_LDAP_XPCOM = @MOZ_LDAP_XPCOM@
 MOZ_LDAP_XPCOM_EXPERIMENTAL = @MOZ_LDAP_XPCOM_EXPERIMENTAL@
@@ -119,7 +117,6 @@ MOZ_INSURIFYING = @MOZ_INSURIFYING@
 MOZ_INSURE_DIRS = @MOZ_INSURE_DIRS@
 MOZ_INSURE_EXCLUDE_DIRS = @MOZ_INSURE_EXCLUDE_DIRS@
 
-MOZ_BUILD_XPFE = @MOZ_BUILD_XPFE@
 MOZ_NATIVE_NSPR = @MOZ_NATIVE_NSPR@
 
 CROSS_COMPILE   = @CROSS_COMPILE@

configure.in

@@ -2987,10 +2987,6 @@ dnl =
 dnl ========================================================
 MOZ_ARG_HEADER(Components and Features)
 
-MOZ_ARG_DISABLE_BOOL(async-dns,
-[  --disable-async-dns     Disable separate dns thread],
-  NO_UNIX_ASYNC_DNS=1)
-
 MOZ_ARG_DISABLE_BOOL(logging,
 [  --disable-logging       Disable logging facilities],
   NS_DISABLE_LOGGING=1)
@@ -3000,12 +2996,6 @@ else
     AC_DEFINE(MOZ_LOGGING)
 fi
 
-dnl build mozilla/xpfe by default
-MOZ_BUILD_XPFE=1
-MOZ_ARG_DISABLE_BOOL(build-xpfe,
-[  --disable-build-xpfe    Disable building of mozilla/xpfe (BROKEN)],
-  MOZ_BUILD_XPFE= )
-
 dnl build Mail & News by default
 MOZ_MAIL_NEWS=1
 MOZ_ARG_DISABLE_BOOL(mailnews,
@@ -3016,17 +3006,6 @@ if test "$MOZ_MAIL_NEWS"; then
 fi
 AC_SUBST(MOZ_MAIL_NEWS)
 
-dnl Turn on editor logging by default
-MOZ_EDITOR_API_LOG=1
-MOZ_ARG_DISABLE_BOOL(editor-api-log,
-[  --disable-editor-api-log
-                          Disable editor logging],
-  MOZ_EDITOR_API_LOG= )
-if test "$MOZ_EDITOR_API_LOG"; then
-  AC_DEFINE(MOZ_EDITOR_API_LOG)
-fi
-AC_SUBST(MOZ_EDITOR_API_LOG)
-
 dnl Turn on the new lightweight gfx text control frames
 MOZ_ENDER_LITE=1
 MOZ_ARG_DISABLE_BOOL(ender-lite,