Modular configure/RELEASE

Remove the hard-coded values from RELEASE, use the local approach
inspired by areaDetector.

The definition of EPICS_BASE and SUPPORT is typically here:
configure/RELEASE_PATHS.local

The definition of modules like ASYN is here:
configure/RELEASE_LIBS.local

There is no need to have both files, feel free to only use one of these.

.gitignore

@@ -3,6 +3,8 @@ O.*
 *.swp
 *BAK.adl
 bin/
+configure/RELEASE_LIBS.local
+configure/RELEASE_PATHS.local
 db/
 dbd/
 html/

configure/RELEASE

@@ -1,42 +1,15 @@
-# RELEASE - Location of external products
-#
-# Note: This file will be scanned to automatically generate
-#       include path definitions etc.
-#       The order of the following declarations will be retained
-#       within those definitions.
-#
-# Note that "#!" marks lines that can be uncommented.
-#
-# Add your declarations here
+#RELEASE Location of external products
+# Run "gnumake clean uninstall install" in the application
+# top directory each time this file is changed.
 
-SUPPORT=
--include $(TOP)/../configure/SUPPORT.$(EPICS_HOST_ARCH)
+include $(TOP)/configure/RELEASE_PATHS.local
+-include $(TOP)/configure/RELEASE_PATHS.local.$(EPICS_HOST_ARCH)
+include $(TOP)/configure/RELEASE_LIBS.local
+-include $(TOP)/configure/RELEASE.local
 
-# If any motor controller communication mechanism besides the VME backplane is
-# required, then ASYN must be defined.
-# Recommended ASYN release: R4-23
-ASYN=$(SUPPORT)/asyn/R4-23
+#TEMPLATE_TOP=$(EPICS_BASE)/templates/makeBaseApp/top
+# If you don't want to install into $(TOP) then
+# define INSTALL_LOCATION_APP here
+#INSTALL_LOCATION_APP=<fullpathname>
 
-# Need the sequencer and the busy record for the MM4005 and XPS trajectory scanning
-# Recommended SNCSEQ release: R2.1.16
-SNCSEQ=$(SUPPORT)/seq/seq-2-1-16
-# Recommended BUSY release: R1-6
-BUSY=$(SUPPORT)/busy/R1-6
-
-# Recommended EPICS release: R3.14.12.4
-EPICS_BASE=
--include $(TOP)/../configure/EPICS_BASE.$(EPICS_HOST_ARCH)
-
-# The following must be defined for the MXmotor device driver.
-#!MX=$(SUPPORT)/mx/mx
-
-# The following support modules are required for the Hytec driver and for the examples in
-# <motor>/motorExApp.  To build examples, the top Makefile,
-# <motor>/Makefile must also be edited.
-
-# Recommended IPAC release: R2-12
-IPAC=$(SUPPORT)/ipac/R2-12
-
-# The following is only needed for the motor examples in iocBoot.
-#!MOTOR=$(TOP)