Move stdlib classes between packages.

libraries/stdlib/src/kotlin/collections/Sequence.kt

@@ -1,4 +1,4 @@
-package kotlin
+package kotlin.sequences
 
 /**
  * A sequence that returns values through its iterator. The values are evaluated lazily, and the sequence

libraries/stdlib/src/kotlin/text/CharCategoryJVM.kt

@@ -1,4 +1,4 @@
-package kotlin
+package kotlin.text
 
 /**
  * Represents the character general category in the Unicode specification.

libraries/stdlib/src/kotlin/text/CharDirectionalityJVM.kt

@@ -1,4 +1,4 @@
-package kotlin
+package kotlin.text
 
 /**
  * Represents the Unicode directionality of a character.

libraries/stdlib/src/kotlin/text/CharsetsJVM.kt

@@ -1,5 +1,5 @@
 @file:JvmName("CharsetsKt")
-package kotlin
+package kotlin.text
 
 import java.nio.charset.*
 

libraries/stdlib/src/kotlin/text/Typography.kt

@@ -1,4 +1,4 @@
-package kotlin
+package kotlin.text
 
 /**
  * Defines names for Unicode symbols used in proper Typography.