Point LALSuite wheels to solar_system_ephemerides package for ephemeris files

Description

This MR remove the LALPulsar ephemeris files from the LALSuite wheels (PyPI packages). Instead these files are sourced from the solar_system_ephemerides package. People who need these files can run

pip install lalsuite[lalpulsar]

to install them with LALSuite.

API Changes and Justification

Backwards Compatible Changes

• This change does not modify any class/function/struct/type definitions in a public C header file or any Python class/function definitions
• This change adds new classes/functions/structs/types to a public C header file or Python module

Backwards Incompatible Changes

• This change modifies an existing class/function/struct/type definition in a public C header file or Python module
• This change removes an existing class/function/struct/type from a public C header file or Python module

If any of the Backwards Incompatible check boxes are ticked please provide a justification why this change is necessary and why it needs to be done in a backwards incompatible way.

Review Status

cc @matthew-pitkin @david-keitel @adam-mercer

lal/gnuscripts/lal.m4

 # lal.m4 - lal specific macros
 #
-# serial 23
+# serial 24
 
 AC_DEFUN([LAL_WITH_DEFAULT_DEBUG_LEVEL],[
   AC_ARG_WITH(
@@ -17,11 +17,13 @@ AC_DEFUN([LAL_WITH_DEFAULT_DEBUG_LEVEL],[
 AC_DEFUN([LAL_WITH_DATA_PATH],[
   AC_ARG_WITH(
     [relative_data_path],
-    AS_HELP_STRING([--with-relative-data-path],[set location relative to liblalsupport.so for LAL data path [default: none]]),
+    AS_HELP_STRING([--with-relative-data-path],[set locations relative to liblalsupport.so for LAL data path [default: none]]),
     [
-      AS_IF([test "x`expr "X${withval}" : ["^\(X\./.*$\)"]`" != "xX${withval}" && test "x`expr "X${withval}" : ["^\(X\.\./.*$\)"]`" != "xX${withval}"],[
-        AC_MSG_ERROR([bad relative path value '${withval}' for --with-relative-data-path])
-      ])
+      for n in `echo ${with_relative_data_path} | sed 's|:| |g'`; do
+        AS_IF([test "x`expr "X${n}" : ["^\(X\./.*$\)"]`" != "xX${n}" && test "x`expr "X${n}" : ["^\(X\.\./.*$\)"]`" != "xX${n}"],[
+          AC_MSG_ERROR([bad relative path value '${with_relative_data_path}' for --with-relative-data-path])
+        ])
+      done
       AC_DEFINE_UNQUOTED([LAL_RELATIVE_DATA_PATH],["${with_relative_data_path}"],[Set location relative to liblal.so for LAL data path])
     ]
   )
@@ -29,16 +31,16 @@ AC_DEFUN([LAL_WITH_DATA_PATH],[
     [fallback_data_path],
     AS_HELP_STRING([--with-fallback-data-path],[use hard-coded fallback location for LAL data path [default: yes]]),
     [
-      AS_CASE(["${withval}"],
+      AS_CASE(["${with_fallback_data_path}"],
         [yes],[:],
         [no],[:],
-        AC_MSG_ERROR([bad value '${withval}' for --with-fallback-data-path])
+        AC_MSG_ERROR([bad value '${with_fallback_data_path}' for --with-fallback-data-path])
       )
     ],[
-      withval=yes
+      with_fallback_data_path=yes
     ]
   )
-  AS_IF([test "X${withval}" = Xyes],[
+  AS_IF([test "X${with_fallback_data_path}" = Xyes],[
     AC_DEFINE_UNQUOTED([LAL_FALLBACK_DATA_PATH],[1],[Use hard-coded fallback location for LAL data path])
   ])
 ])