Dynamically assign $MAJOR during packaging

builds/install/arch-specific/win32/installation_readme.txt

@@ -65,7 +65,7 @@ Re-installation of Firebird 3
 
 The binary installer does its best to detect and
 preserve a previous install. If the installer detects
-firebird.conf or security3.fdb it will not offer the 
+firebird.conf or security$MAJOR.fdb it will not offer the
 option to install legacy_auth. Neither will it offer
 the option to set the SYSDBA password.
 
@@ -120,7 +120,7 @@ o Uninstallation leaves five files in the install
   - firebird.conf
   - fbtrace.conf
   - firebird.log
-  - security3.fdb
+  - security$MAJOR.fdb
 
   This is intentional. These files are all
   potentially modifiable by users and may be required

builds/install/arch-specific/win32/installation_scripted.txt

@@ -17,6 +17,7 @@ These notes only document the firebird specific options for a scripted
 installation. Developers should refer to the full InnoSetup documentation
 for a description of the other options available for a scripted install.
 This can be found here:
+
   http://www.jrsoftware.org/ishelp/
 
 It is highly recommended that a scripted install is tested thoroughly
@@ -54,7 +55,7 @@ Parameters specific to Firebird installs
 HELP
   Invoke this file as a help screen at installation time.
   Note no / is prefixed !! Because /? and /HELP are now
-  used by innosetup itself to dispaly innosetup specific help.
+  used by innosetup itself to display innosetup specific help.
 
 
 /COMPONENTS="comma separated list of component names"
@@ -148,7 +149,7 @@ Parameters specific to Firebird uninstalls
     firebird.conf
     databases.conf
     firebird.log
-    security3.fdb
+    security$MAJOR.fdb
     fbtrace.conf
 
   The assumption is that these files will be useful to users