doc: note when some record types were introduced

modules/database/src/std/rec/aSubRecord.dbd.pod

@@ -42,6 +42,8 @@ value is non-zero.
 
 =back
 
+This record type was included in base.dbd beginning with epics-base 3.14.10 .
+
 =head2 Record-specific Menus
 
 =head3 Menu aSubLFLG

modules/database/src/std/rec/histogramRecord.dbd.pod

@@ -13,6 +13,8 @@ The histogram record is used to store frequency counts of a signal into an array
 of arbitrary length. The user can configure the range of the signal value that
 the array will store. Anything outside this range will be ignored.
 
+This record type was included in base.dbd beginning with epics-base 3.15.0.1 .
+
 =head2 Parameter Fields
 
 The record-specific fields are described below.

modules/database/src/std/rec/int64inRecord.dbd.pod

@@ -14,6 +14,8 @@ from a hardware input.
 The record supports alarm limits, alarm filtering, graphics and control
 limits.
 
+This record type was included in base.dbd beginning with epics-base 3.16.1 .
+
 =head2 Parameter Fields
 
 The record-specific fields are described below.

modules/database/src/std/rec/int64outRecord.dbd.pod

@@ -13,6 +13,8 @@ This record type is normally used to send an integer value of up to 64 bits
 to an output device.
 The record supports alarm, drive, graphics and control limits.
 
+This record type was included in base.dbd beginning with epics-base 3.16.1 .
+
 =head2 Parameter Fields
 
 The record-specific fields are described below.

modules/database/src/std/rec/lsiRecord.dbd.pod

@@ -11,6 +11,8 @@
 The long string input record is used to retrieve an arbitrary ASCII string with
 a maximum length of 65535 characters.
 
+This record type was included in base.dbd beginning with epics-base 3.15.0.2 .
+
 =head2 Parameter Fields
 
 The record-specific fields are described below, grouped by functionality.

modules/database/src/std/rec/lsoRecord.dbd.pod

@@ -11,6 +11,8 @@
 The long string output record is used to write an arbitrary ASCII string with a
 maximum length of 65535 characters.
 
+This record type was included in base.dbd beginning with epics-base 3.15.0.2 .
+
 =head2 Parameter Fields
 
 The record-specific fields are described below, grouped by functionality.

modules/database/src/std/rec/printfRecord.dbd.pod

@@ -11,6 +11,8 @@
 The printf record is used to generate and write a string using a format
 specification and parameters, analogous to the C C<printf()> function.
 
+This record type was included in base.dbd beginning with epics-base 3.15.0.2 .
+
 =head2 Parameter Fields
 
 The record-specific fields are described below, grouped by functionality.